EP0903071B1 - Tête de coupe et tondeuse à filament - Google Patents

Tête de coupe et tondeuse à filament Download PDF

Info

Publication number
EP0903071B1
EP0903071B1 EP98116757A EP98116757A EP0903071B1 EP 0903071 B1 EP0903071 B1 EP 0903071B1 EP 98116757 A EP98116757 A EP 98116757A EP 98116757 A EP98116757 A EP 98116757A EP 0903071 B1 EP0903071 B1 EP 0903071B1
Authority
EP
European Patent Office
Prior art keywords
cutting head
cutting
head according
cutting element
carrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98116757A
Other languages
German (de)
English (en)
Other versions
EP0903071A1 (fr
Inventor
Robert E. Kitz
Qing H. Guo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Techtronic Industries Co Ltd
Original Assignee
Techtronic Industries Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Techtronic Industries Co Ltd filed Critical Techtronic Industries Co Ltd
Publication of EP0903071A1 publication Critical patent/EP0903071A1/fr
Application granted granted Critical
Publication of EP0903071B1 publication Critical patent/EP0903071B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/416—Flexible line cutters
    • A01D34/4165—Mounting of the cutter head

Definitions

  • the invention relates to a cutting head for receiving a flexible cutting elements with an essentially closed bottom and a peripheral wall, being on or over at least one hook in the bottom and in the peripheral wall at least one opening each for receiving the cutting element are provided, and with a portable line mower such a cutting head.
  • US-A-5,433,006 discloses a portable line mower a cutting head that holds two cutting threads and four Make exits from a peripheral wall, each around are ninety degrees apart. The attachment of the Cutting threads are made in a chamber, the top, bottom and on one side is delimited by a hook. The cutting line is consequently used radially.
  • the problem underlying the invention is seen in that the radial insertion of the cutting line under the narrow spatial conditions is difficult to carry out.
  • the cutting head can be placed on the floor and can be held with the foot and the cutting element can be convenient towards the operator in a receiving slot of the hook are pulled in, which may involve higher forces are required if the cutting element by means of a Adhesion should be kept in it.
  • the formation of the receiving slot with a substantially same width prevents the cutting element from only one Location of the receiving slot is held. Rather, it is Cutting element along the entire length and no matter where it is is firmly in the hook.
  • Funnel either on the inlet side, as on outlet end of the opening or both, have the Advantage that they fatigue the cutting element in Area of its entry or exit due to high. Avoid surface pressure.
  • a technically simple way to attach the cutting head to fasten a drive is in the corresponding Training a middle area, e.g. B. in the manner of a hub seen that with a drive clutch, shaft or the like can be connected centrally.
  • the portable line mower is equipped with a Cutting head designed according to the invention is special makes sense because such line mowers can be used universally need and thus a customer with a single line mower in can work under different conditions.
  • Figure 1 is a perspective view of a line mower 10 can be seen with a rotating cutting head 12, which the Features of the present invention.
  • a line mower 10 can be seen with a rotating cutting head 12, which the Features of the present invention.
  • the present invention with reference to those in the drawing illustrated embodiments will be described understand that the present invention in many other types and other embodiments can be realized can.
  • any size, shape, material or type of Elements are used.
  • the thread cutter 10 generally includes one Internal combustion engine 14, a tube 16, handles 18 and one Housing 20 for receiving the cutting head 12 on the line mower 10.
  • a drive shaft 22 extends from the Internal combustion engine 14 starting through pipe 16 to the housing 20.
  • the line mower could 10 with an electric motor instead of an internal combustion engine 14 be provided.
  • the cutting head 12 contains generally a carrier 24 and a flexible cutting element 26.
  • the cutting head 12 is of the type that a cutting element 26, a so-called thread, holds tight, d. H. It is not Tracking mechanism for the replenishment of a used one Cutting elements 26 are provided.
  • the carrier 24 is a one-piece part, the preferably made of plastic or a polymer material is poured.
  • the carrier 24 essentially has one open top 28, a substantially closed bottom 30, a peripheral wall 32, a central region 34, hooks 36 and Web 38.
  • the central area 34 forms a receiving area for Attaching the cutting head 12 to the housing 20.
  • the Center area 34 has a hexagonal area 40 on the Top 28 for receiving and connecting to a not shown drive coupling of the housing 20.
  • area 40 may be provided with a be provided with another profile that connects to the Drive clutch is used.
  • a through hole 42 extends through the central area 34 to a recess 44 on the Bottom 30.
  • a drive clutch screw, not shown extends through this through hole 42.
  • One does not shown nut is placed on the screw and in the Recess 44 housed to the cutting head 12 to the To connect the drive coupling.
  • the peripheral wall 32 six side openings 46 through them extend.
  • the six openings 46 are in three pairs arranged, as will be explained below.
  • openings 46 preferably provided with funnels 37 which are fixed in the Openings 46 are provided.
  • the funnels need 37 not to be provided in alternative embodiments.
  • the two hooks 36 are from the top 28 out of the bottom 30 facing.
  • Each hook 36 has a receiving slot 48 with an inlet 50 facing the bottom 30 and one closed end portion 52 at the top 28.
  • the width of the Receiving slots 48 is along most of the length of the Receiving slots 48 are uniform.
  • the webs 38 extend in the radial direction from the central region 34 to the Circumferential wall 32.
  • Each web 38 has a web slot 54, which extends from the top 28 into the web 38 extends.
  • the carrier 24 also has two pin areas 56, that are in front of the first pair of openings 46a.
  • the flexible cutting element 26 is from the top 28 of the Carrier 24 attached to this. It is therefore not necessary to remove the carrier 24 from the housing 20, to change a flexible cutting element 26.
  • the Cutting element 26 is first placed in one of the hooks 36 hooked. The center area of the cutting element 26 is through an area 51 into the inlet 50 and into the receiving slot 48 guided. The width of the receiving slot 48 is essentially equal to or slightly less than the diameter of the Cutting elements 26 so that a frictional connection between the hook 36 and the cutting element 26 is formed.
  • the web slots 54 also have the same width. The cutting element 26 is then threaded through the first pair of openings 46a and on one side of the carrier 24 into the web slots 54 used.
  • the winding guide of the cutting element 26 on the carrier 24 and the frictional engagement of the cutting element 26 in the Receiving slot 48 and the web slot 54 holds it Cutting element 26 releasably but still firmly on the carrier 24.
  • the carrier 24 is also designed to have two to record separate cutting elements 26. In detail and how this is shown in Figure 4, two separate Cutting elements 26b, 26c are attached to the carrier 24 because the carrier 24 two hooks 36 and two further pairs has lateral openings 46b, 46c.
  • the carrier 24 is consequently trained or adapted so that he optionally a cutting element 26 in a first guide or take up two cutting elements 26 in a second guide can.
  • the attachment of the cutting element 26 or the Cutting elements 26 on the carrier 24 is at will Operator. In both cases, the Cutting elements 26 at approximately equal angular intervals to each other out of the carrier 24.
  • FIG alternative embodiment of the present invention shows.
  • a rotatable Cutting head 70 a carrier 72 and a flexible cutting element 74.
  • the carrier 72 is in one piece and preferably made of one molded plastic.
  • the carrier 72 has one substantially open top 76, one substantially closed bottom 78 and a peripheral wall 80.
  • the peripheral wall 80 has two openings 82.
  • the carrier 72 has two hooks 84, 86 and two sets of webs 88, 90 on opposite Sides of the carrier 72 are provided.
  • the first hook 84 has a receiving slot 92 along a first width a substantial part of its length, for example from 0.2667 cm (0.105 inch).
  • the second hook 86 has one Receiving slot 94 of a second different width along a major part of its length, e.g. B. 0.2032 cm (0.080 inch). However, any common width could be provided become.
  • the webs 88, 90 also have web slots 96, 98.
  • the first web slots 96 have a width that is approximately corresponds to the width of the receiving slot 92.
  • the second Web slots 98 have a width which is approximately the width of the Receiving slot 94 corresponds.
  • the carrier 72 is formed so that it has two flexible Take up cutting elements 26 of different diameters can.
  • a flexible cutting element 74 with a first Diameter can be in the receiving slot 92 and Web slots 96 are held.
  • a second flexible cutting element with a smaller diameter in the receiving slot 94 and the web slots 98 inserted become. In this way, the user receives one Application flexibility that was not previously available to him was standing.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Claims (9)

  1. Tête de coupe (12) destinée à recevoir au moins un élément de coupe flexible (26, 74), avec un fond (30, 78) globalement fermé et une paroi périphérique (32, 80), étant précisé qu'il est prévu sur le fond (30, 78) ou au-dessus de celui-ci au moins un crochet (36, 84, 86), et dans la paroi périphérique (32, 80) au moins une ouverture (46, 82) pour recevoir l'élément de coupe (26, 74), caractérisée en ce que le crochet (36, 84, 86) est ouvert en direction du fond (30, 78) et est fermé sur un côté supérieur (28, 76) opposé au fond (30, 78).
  2. Tête de coupe selon la revendication 1, caractérisée en ce qu'il est prévu deux crochets (36, 84, 86) sur les côtés opposés d'une zone centrale (34).
  3. Tête de coupe selon la revendication 1 ou 2, caractérisée en ce qu'il est prévu trois paires d'ouvertures (46a, 46b, 46c), un crochet (36, 84, 86) étant disposé à chaque fois entre les ouvertures d'au moins deux paires (46a, 46b) ou (46a et 46c).
  4. Tête de coupe selon l'une au moins des revendications précédentes, caractérisée en ce qu'il est prévu plusieurs crochets (36, 84, 86) avec des fentes de réception (48, 92, 94) de largeurs différentes.
  5. Tête de coupe selon l'une au moins des revendications précédentes, caractérisée en ce qu'il est prévu entre la paroi périphérique (32, 80) et la zone centrale (34) des pattes radiales (38, 88, 90) qui présentent des fentes de pattes (54, 96, 98) ouvertes vers le côté supérieur (28, 76) et destinées à recevoir l'élément de coupe (26, 74), et ces fentes (54, 96, 98) ont des largeurs égales ou différentes.
  6. Tête de coupe selon l'une au moins des revendications précédentes, caractérisée en ce que la fente de réception (48, 92, 94) présente la même largeur pratiquement sur toute sa longueur.
  7. Tête de coupe selon l'une au moins des revendications précédentes, caractérisée par une partie en forme d'entonnoir (37) qui est reliée à l'ouverture (46, 82).
  8. Tête de coupe selon l'une au moins des revendications précédentes, caractérisée en ce qu'elle comporte un support (24, 72) avec une zone centrale (34) pour une liaison d'entraínement.
  9. Débroussailleuse à fil portative (10) comportant une tête de coupe (12) entraínée en rotation selon l'une au moins des revendications précédentes.
EP98116757A 1997-09-17 1998-09-04 Tête de coupe et tondeuse à filament Expired - Lifetime EP0903071B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/932,165 US5979064A (en) 1997-09-17 1997-09-17 String trimmer with fixed string head
US932165 1997-09-17

Publications (2)

Publication Number Publication Date
EP0903071A1 EP0903071A1 (fr) 1999-03-24
EP0903071B1 true EP0903071B1 (fr) 2002-12-04

Family

ID=25461886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98116757A Expired - Lifetime EP0903071B1 (fr) 1997-09-17 1998-09-04 Tête de coupe et tondeuse à filament

Country Status (6)

Country Link
US (1) US5979064A (fr)
EP (1) EP0903071B1 (fr)
JP (1) JPH11127655A (fr)
AU (1) AU729990B2 (fr)
CA (1) CA2242213C (fr)
DE (1) DE59806507D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3756439B1 (fr) * 2019-06-25 2022-04-06 Flashcutter S.R.L. Con Unico Socio Tête rotative pour tondeuse à fil

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US20020073556A1 (en) * 2000-12-15 2002-06-20 Robert L. Phillips Top loading fixed line trimmer head
US6643938B2 (en) 2001-08-17 2003-11-11 Robert J. Livingston Replacement cutting attachment for string trimmer
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FR2850237B1 (fr) * 2003-01-23 2005-10-21 Speed France Tete de coupe pour debroussailleuse, coupe-bordures ou analogue
FR2850235B1 (fr) * 2003-01-23 2005-10-21 Speed France Tete de coupe pour debroussailleuse, coupe-bordures ou analogue
FR2850238B1 (fr) * 2003-01-23 2005-10-21 Speed France Tete de coupe pour debroussailleuse, coupe-bordures ou analogue
FR2850239B1 (fr) * 2003-01-23 2005-10-21 Speed France Tete de coupe pour debroussailleuse, coupe-bordures ou analogue
FR2850236B1 (fr) * 2003-01-23 2005-10-21 Speed France Tete de coupe debroussailleuse, coupe-bordures ou analogue
FR2854764B1 (fr) 2003-05-14 2006-06-23 Speed France Nouveau fil de coupe pour appareils tels que taille-bordures ou debroussailleuses
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WO2014025789A1 (fr) * 2012-08-09 2014-02-13 Orlando Jerez Raccord incliné pour ensemble-tête rotatif
EP2724602B1 (fr) 2012-10-26 2016-10-05 Black & Decker Inc. Système de tête de coupe rotative
JP6143328B2 (ja) * 2013-02-08 2017-06-07 株式会社北村製作所 線状カッターの取付構造及びこれを備えた刈払機の接地体
JP6189759B2 (ja) * 2014-01-30 2017-08-30 守弘 間木 コード式刈払機用ロータ
USD758150S1 (en) 2014-04-04 2016-06-07 Andreas Stihl Ag & Co. Kg Cordless trimmer with bike handle
USD758151S1 (en) 2014-04-04 2016-06-07 Andreas Stihl Ag & Co. Kg Cordless trimmer with loop handle
DE102014006057A1 (de) * 2014-04-26 2015-10-29 Andreas Stihl Ag & Co. Kg Fadenmähkopf für einen Freischneider
EP2974586B1 (fr) * 2014-07-15 2017-09-13 Tecomec S.r.l. Tête de coupe pour débroussailleuses
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USD759444S1 (en) 2014-08-12 2016-06-21 Martin Hermann Circular trimmer line
USD799286S1 (en) 2015-03-05 2017-10-10 Andreas Stihl Ag & Co. Kg Pole pruner head
USD798679S1 (en) 2015-08-06 2017-10-03 Andreas Stihl Ag & Co., Kg Cordless trimmer
CA3012335A1 (fr) * 2016-02-22 2017-08-31 Mtd Products Inc Tete de taille-bordures multimode
USD813000S1 (en) 2016-03-18 2018-03-20 Tecomec S.R.L. Head trimmer
US10070582B2 (en) 2016-04-20 2018-09-11 Tti (Macao Commercial Offshore) Limited String trimmer head
USD830798S1 (en) 2016-06-03 2018-10-16 Andreas Stihl Ag & Co. Kg Battery powered trimmer
USD823080S1 (en) 2016-10-07 2018-07-17 Tecomec S.R.L. Head trimmer
USD826013S1 (en) * 2016-10-07 2018-08-21 Tecomec S.R.L. Head trimmer
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3756439B1 (fr) * 2019-06-25 2022-04-06 Flashcutter S.R.L. Con Unico Socio Tête rotative pour tondeuse à fil

Also Published As

Publication number Publication date
DE59806507D1 (de) 2003-01-16
AU8417798A (en) 1999-04-01
JPH11127655A (ja) 1999-05-18
US5979064A (en) 1999-11-09
AU729990B2 (en) 2001-02-22
CA2242213C (fr) 2000-11-07
EP0903071A1 (fr) 1999-03-24

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